Fin's Fish Guide
The Black medaka (Oryzias nigrimas) is a freshwater fish of the family Adrianichthyidae that grows up to 5 cm.
Description
The black medaka is a small ricefish (Adrianichthyidae) endemic to Lake Poso on Sulawesi in Indonesia. The species grows to about 5 cm and has a slender body that in adults is strikingly dark to black. It lives in schools near the surface of the clear lake and eats small zooplankton, insects and larvae. The female carries the eggs for a time as a cluster at the belly. Through introduced species the Lake Poso ricefishes are under pressure. The fish is harmless to humans.
Frequently asked questions
How do you recognise the Black medaka?
The Black medaka has an elongate, eel-like body and is mainly black.
Where does the Black medaka live?
The Black medaka lives in fresh water and is mostly found around mixed bottom. Asia: Indonesia
How big does the Black medaka get?
The Black medaka grows to a maximum of about 5 cm.
Is the Black medaka dangerous to humans?
No, the Black medaka is harmless to humans. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.
Is the Black medaka edible?
Yes, the Black medaka is commonly eaten.
More photos
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Oryzias
More from the family Adrianichthyidae
Want the complete picture on the Black medaka?
Point your camera at the fish and Fin names the species in seconds. Free, and the Black medaka is one of 12,519 species in the app.